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CV34 versus CV40 parts (is needle jet the same?)
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06 Nov 2011 23:09 #487314
by cfaherty
1983 KZ750 F1 LTD Shaft
CV34 versus CV40 parts (is needle jet the same?) was created by cfaherty
Hi. I've got the CV34 carbs on my KZ750 and I am contemplating getting some upgraded emulsion tubes (needle jets). On a different bike I had enjoyed the crisper running with a yost performance power tube. It's got a bit slicker design than the stock part with finer and better placed holes. The emulsion tube is often sold with a kit of other stuff which makes it all too expensive for me since I need 4X, so I am considering something like a CVP velocity emulsion tube which is around $15 ea.
Anyways, these are made for the CV40 carb, so that has me wondering if the CV40 needle jet is the same as the CV34 needle jet. Does anyone know?
Anyways, these are made for the CV40 carb, so that has me wondering if the CV40 needle jet is the same as the CV34 needle jet. Does anyone know?
1983 KZ750 F1 LTD Shaft
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- cfaherty
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07 Nov 2011 00:38 #487338
by cfaherty
1983 KZ750 F1 LTD Shaft
Replied by cfaherty on topic CV34 versus CV40 parts (is needle jet the same?)
I pulled one (cv34 needle jet) and compared it with some internet cv40 pictures and I don't think they are interchangeable. The hole count and size, and overall length don't look the same.
I have some small drill bits coming in so I think I will just put 6 holes along each side instead of 2-3 and see what it does.
I have some small drill bits coming in so I think I will just put 6 holes along each side instead of 2-3 and see what it does.
1983 KZ750 F1 LTD Shaft
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- Motor Head
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07 Nov 2011 00:47 #487344
by Motor Head
1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...
Replied by Motor Head on topic CV34 versus CV40 parts (is needle jet the same?)
That will change that emulsion tube a lot.
Google the Emulsion tube and do some reading on how it works and its function in the carbs circuit.
They are not cheap parts.
Google the Emulsion tube and do some reading on how it works and its function in the carbs circuit.
They are not cheap parts.
1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...
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07 Nov 2011 09:46 #487400
by cfaherty
1983 KZ750 F1 LTD Shaft
Replied by cfaherty on topic CV34 versus CV40 parts (is needle jet the same?)
Yes, I read some great descriptions, and it is fascinating how the emulsion tube works with the placement and size of the holes. A careful study is required before any modifications.
1983 KZ750 F1 LTD Shaft
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